138825755 has 8 divisors (see below), whose sum is σ = 172335600. Its totient is φ = 107230816.

The previous prime is 138825749. The next prime is 138825763. The reversal of 138825755 is 557528831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138825755 - 2¹⁰ = 138824731 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478565 + ... + 478854.

It is an arithmetic number, because the mean of its divisors is an integer number (21541950).

Almost surely, 2^138825755 is an apocalyptic number.

138825755 is a deficient number, since it is larger than the sum of its proper divisors (33509845).

138825755 is an equidigital number, since it uses as much as digits as its factorization.

138825755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957453.

The product of its digits is 336000, while the sum is 44.

The square root of 138825755 is about 11782.4341712568. The cubic root of 138825755 is about 517.7936037642.

The spelling of 138825755 in words is "one hundred thirty-eight million, eight hundred twenty-five thousand, seven hundred fifty-five".